[Ty Ford]

Yes, well the audio shot with the video should stay in sync.

The problem is audio only recorders.

Regards,

Ty Ford

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[Ty Ford]

Hello Sean and welcome to the Cow Audio Forum.

My guess is that you have a ground loop, but this could be a symptom of a very dangerous AC power problem. You can have four outlets in the same room, all connected to the same branch of power, or on different branches. A ground loop happens when there is even a minor difference in ground potential between two different power outlets. If you measured voltage or resistance between the little screws that hold the cover plates on the outlets with a volt/ohm meter, you’d get a voltage and/or resistance reading. That’s not unusual, but there also may be a wiring problem in the walls or at the panel. Be very careful when trying to find the gremlin. Consult with a professional electrician.

First try plugging everthing into the same outlet or strip. That will eliminate the possibility of ground potential differences from separate outlets. I’m not sure why they say to plug in somewhere else, perhaps because the device uses a lot of power and they are concerned that you’ll blow a breaker. Try it anyway with just as much stuff on as you need to see if the hum goes away.

Here’s another simple fix. If your power plugs are only two prong (like your Mac Book power supply), try rotating each one (unplug, put the plug in the other way) one at a time. That sometimes solves the problem.

Try running the Mac only on battery. When I did that a few years back with my Ti book, the buzz went away because trash from a funky DAT external power supply was coming back up the power cable to the laptop.

You may find that an ISOBAR power strip with transformer separated banks will remove or reduce the hum.

I use an Ebtech Hum Eliminator (by Morely) between my G5 and audio rack. It’s designed to transformer isolate two unbalanced audio lines. That really helped a lot in reducing the hum I had when interfacing the unbalanced audio to and from my G5 with my rack. And it’s SAFE.

SImple three prong-to-two prong converters on grounded power plugs may work, but be EXTREMELY careful. The grounds are there for your protection. I have an FCC license that says I’m an engineer. I know what I’m doing (most of the time), so I can break the rules a little. If you don’t know what you”re doing you could get a nasty shock, kill yourself and/or burn the house down, not necessarily in that order. 🙂

We have all heard of musicians and vocalists who have been killed by an improperly grounded system. These systems were operated by professionals who thought they knew what they were doing.

You may find you need to employ one or more of these tricks to get rid of hum and buzz and you may still have a little left. Let’s have great audio and let’s be safe out there.

Regards,

Ty Ford

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[Ty Ford]

Or redraw the waveform and flatten the clicks.\

Regards,

Ty Ford

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[Ty Ford]

Actually, what I meant was even among devices supposedly running at the same sample rate, one will frequently be slightly higher than the other. That’s why word clock was developed.

Regards,

Ty Ford

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[Ty Ford]

Hello Jeremy and welcome to the Cow Audio Forum,

What’s an AT 2000?
What the event?
What are the distances?

If these are wireless mics,and the receivers use removable BNC-connected antennae, you can get larger, more directional antennae for the receivers. You’d mount them posts so you could maintain line of sight with the transmitters. Also consider moving the receivers closer to the transmitters and running cable from them to your mixer.

Regards,

Ty Ford

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[Ty Ford]

Hello Laura and welcome to the Cow Audio Forum,

Once they click, they click. I’m wondering, though, if these impulse sounds can be removed with a de-clicking software normally used to remove clicks from records,

Haven’t tried it. Maybe someone else has.Do you have de-clicking software?

Regards,

Ty Ford

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[Ty Ford]

Hello Roget and welcome to the Cow Audio Forum,

As much of a fan as I am with Sennheiser, when you get below a certain price of any manufacturer, the performance suffers. I have not had any time with this mic. It may be a standout for its price. That happens sometimes.

The PD170 mic is pretty dismal. The mic on my XL2 is actually pretty good.

Are you sure a camera mounted mic is the way you must go?

Regards,

Ty Ford

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[Ty Ford]

OK,
I re rendered, this time as an mp4. It works on all my computers now as well.

go to the directory https://idisk.mac.com/tyreeford-Public?view=web

and look for TyFordOpalEvent.mp4

Use the arrow on the right to download.

Please let me knowhow it works for you.

Thanks for your patience.

Ty Ford

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[Ty Ford]

Hello Glenn and welcome to the Cow Audio Forum,

Tough call. It’s best to get some height (distance) on a marching band so you don’t close-mic one section and miss the rest. I think elevated distance micing.

That’s tough to do if they are covering the entire field. I’d want a lot of rehearsal time to figure out what to use and where to be.

Regards,

Ty Ford

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[Ty Ford]

Hello Rick and welcome to the Cow Audio Forum

You seem to have selected two omni configurations and two cardioid configurations.

Of the two omnis, you have chosen one with an XLR and one with no cable.

You’re not giving us a lot to go on as regards your use, so making suggestions is difficult.

Regards,

Ty Ford

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